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[a.martin at alphalink.fr]

Hello,

I'm currently benchmarking an ESL program that use both outbound and inbound mode and notice a quite large memory usage for the FreeSWITCH process compared to a dialplan that has similar actions (8 set (half multiset), 1 sched_hangup, 1 bridge).
The FreeSWITCH process use about 2 Mo per call and about 180 Ko without ESL.

This does not look like a leak, the memory usage is stable and proportional to the current calls, Valgrind does not show anything special either.

What was tested:
- Pure dialplan while running only the inbound ESL subscribing to some events (CHANNEL_HANGUP, CHANNEL_HANGUP_COMPLETE, CHANNEL_EXECUTE_COMPLETE, SESSION_HEARTBEAT) for all channels, inbound ESL does not increase memory consumption,
- Outbound ESL that just close the connection at the beginning of the dialplan, same memory usage as a complete ESL program,
- Outbound ESL linger set/not set, no change,
- Outbound ESL parameters async/full present or not, no change,
- Versions 1.10.5~release~17 and 1.10.6~release~18, no change.

Does this kind of resource penalty is to be expected?
What could cause these differences?
For those using outbound ESL, how much memory does your FreeSWITCH use per call?

_________________________________________________________________________

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[brian at freeswitch.com]

What is the memory usage attributed to? Your process or FreeSWITCH?

On Mon, Sep 27, 2021 at 1:16 PM Adrien Martin <a.martin@alphalink.fr (a.martin@alphalink.fr)> wrote:

[a.martin at alphalink.fr]

The memory usage is attributed to FreeSWITCH.

_________________________________________________________________________

The FreeSWITCH project is sponsored by SignalWire https://signalwire.com
Enhance your FreeSWITCH install with disruptive priced SMS and PSTN services.
Build your next product on our scalable cloud platform.

Join our online community to chat in real time https://signalwire.community

Professional FreeSWITCH Services
sales@freeswitch.com
https://freeswitch.com

Official FreeSWITCH Sites
https://freeswitch.com/oss
https://freeswitch.org/confluence
https://cluecon.com

FreeSWITCH-users mailing list
FreeSWITCH-users@lists.freeswitch.org
http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
https://freeswitch.com

[brian at freeswitch.com]

When you disconnect does it go away?

On Tue, Sep 28, 2021 at 11:56 AM Adrien Martin <a.martin@alphalink.fr (a.martin@alphalink.fr)> wrote:

[a.martin at alphalink.fr]

When closing the socket from outbound ESL program the memory is still in use by FreeSWITH.
But when the calls end the memory is released.

On 28/09/2021 20:48, Brian West wrote:

[brian at freeswitch.com]

What is the call doing?

On Wed, Sep 29, 2021 at 2:38 PM Adrien Martin <a.martin@alphalink.fr (a.martin@alphalink.fr)> wrote:

[a.martin at alphalink.fr]

These are test calls from Sipp clients toward Sipp servers, the RTP does not goes through FreeSWITCH with bypass_media=true.
The SIP flow is quite simple: INVITE,180,200,ACK,BYE,200.
There is no DTMF, re-INVITE, OPTIONS.
The calls duration is set to have 1k to 10k simultaneous calls and 5 to 15 calls per second.

About the ESL program or the dialplan:
Some headers are set (caller number/name, Privacy).
A maximum duration is set with sched_hangup.
A maximum ringing duration is set with call_timeout.
Some special variables are configured (hangup_after_bridge=false, continue_on_fail=true, sip_ignore_remote_cause=true, bypass_media=true).
Then a bridge is used to forward the calls to several gateways (round-robin in the ESL program or with mod_distributor in the dialplan).
Both inbound and outbound use Sofia.

On 29/09/2021 22:42, Brian West wrote: